add events package (#2341)

* add events package

* update go version

util/mdns/server.go

@@ -8,8 +8,8 @@ import (
 	"sync/atomic"
 	"time"
 
-	log "go-micro.dev/v4/logger"
 	"github.com/miekg/dns"
+	log "go-micro.dev/v4/logger"
 	"golang.org/x/net/ipv4"
 	"golang.org/x/net/ipv6"
 )

util/pool/default.go

@@ -4,8 +4,8 @@ import (
 	"sync"
 	"time"
 
-	"go-micro.dev/v4/transport"
 	"github.com/google/uuid"
+	"go-micro.dev/v4/transport"
 )
 
 type pool struct {

util/sync/manager.go

@@ -3,8 +3,8 @@ package sync
 import (
 	"time"
 
-	"go-micro.dev/v4/store"
 	"github.com/pkg/errors"
+	"go-micro.dev/v4/store"
 )
 
 type operation struct {

util/sync/sync.go

@@ -6,9 +6,9 @@ import (
 	"sync"
 	"time"
 
-	"go-micro.dev/v4/store"
 	"github.com/ef-ds/deque"
 	"github.com/pkg/errors"
+	"go-micro.dev/v4/store"
 )
 
 // Sync implements a sync in for stores